The SJE Rhombus Model 124 control panel is designed for applications requiring
intrinsically safe float circuits or other circuit extensions. This panel alternately
controls two single phase pumps. The alternating action equalizes pump wear. In
addition to the alternating pump control, the system provides override control
should either pump fail. If an alarm condition occurs, an alarm switch activates
the audio/visual alarm system. Common applications include pump chambers, lift
stations, or other installations classified as hazardous locations requiring instrinsically
safe circuits. UL Listed relating to hazardous locations with intrinsically safe
circuits.